Question

我一直在使用以下代码

import java.io.File;
import java.io.IOException;

import javax.sound.sampled.AudioFileFormat;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.TargetDataLine;

public class AudioCapture extends Thread {
    private TargetDataLine dataLine;
    private AudioFileFormat.Type audioFileType;
    private AudioInputStream incomingStream;
    private File generatedFile;

    public AudioCapture(TargetDataLine line, AudioFileFormat.Type requiredFileType, File file) {
        dataLine = line;
        incomingStream = new AudioInputStream(line);
        audioFileType = requiredFileType;
        generatedFile = file;
    }

    public void startCapture() {
        dataLine.start();
        super.start();
    }

    public void stopCapture() {
        dataLine.stop();
        dataLine.close();
    }

    public void run() {
        try {
            AudioSystem.write(incomingStream, audioFileType, generatedFile);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        String strFilename = "captureFile.wav";
        File outputFile = new File(strFilename);

        AudioFormat audioFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 22050.0F, 16, 2, 4, 22050.0F, false);
        DataLine.Info info = new DataLine.Info(TargetDataLine.class, audioFormat);
        TargetDataLine targetDataLine = null;
        try {
            targetDataLine = (TargetDataLine) AudioSystem.getTargetDataLine(audioFormat);
            targetDataLine.open(audioFormat);
        } catch (LineUnavailableException e) {
            System.out.println("Unable to acquire an audio recording line");
            e.printStackTrace();
            System.exit(1);
        }
        System.out.println("AudioFormat settings: " + audioFormat.toString());
        AudioFileFormat.Type targetType = AudioFileFormat.Type.WAVE;
        AudioCapture recorder = new AudioCapture(targetDataLine, targetType, outputFile);

        recorder.startCapture();
        System.out.println("Starting the recording now...");
        System.out.println("Please press to stop the recording.");
        try {
            System.in.read();
        } catch (IOException e) {
            e.printStackTrace();
        }

        recorder.stopCapture();
        System.out.println("Capture stopped.");
    }
}

捕获来自系统的任何音频数据，但是我无法弄清楚，为什么打开保存的文件时我听不到任何声音。如果我在朋友PC上尝试相同的程序，它似乎可以正常工作。唯一的不同是，我使用了一个外部USB声卡（例如一个https://images-na.ssl-images-amazon.com/images/I/61yluFW43ML.SX425.jpg），因为原始声卡已损坏。这可以代表某种问题吗？

任何帮助将非常感激！

我似乎无法使用Java录制音频

0 个答案: